Sprite Attribute 1 (with INC) Register

Number	TBRegisterNumber::$76
Readable	TBRegisterReadable::No
Writable	TBRegisterWritable::Yes
Short Description	[[ShortDesc::Same as {{#ask: TBRegisterNumber::$36 }} ($36) (write second byte of sprite-attributes), plus increments {{#ask: TBRegisterNumber::$34 }} ($34)]]

Eight low bits of Y position. MSB of Y-pos is in "byte 5".

After write into sprite-attribute "byte 2" ({{#ask: PortNumber::$xx57 }} ($xx57{{#ask: PortNumber::$xx57 |mainlabel=- |headers=hide |intro= /  |?NumberDec#- }})), the {{#ask: TBRegisterNumber::$34 }} ($34) is incremented (with all consequences stemming from such action). If the sprite 63 was modified, the result of the increment is officially "undefined behaviour", and code should explicitly set valid 0..63 sprite index before next sprite-attribute manipulation.